Glass-furnace



2 SheetsSheet 1.

J. W. & J; R. HOUOH'IN.

(No Model.)

. GLASS FURNACE. No. 254,658.

Patented Mar. 7, 1882.

Wilness as,- W

UNITED STATES PATENT OFFIC JOSHUA vV. HOUOHIL AND JOSHUA It. HOUOHIN, OF BROOKLYN, NElV YORK.

GLASS-FURNACE.

SPECIFICATION forming part of Letters Patent No. 254,653, dated March '7, 1882,

Application filed July 20, 1881. (No model.)

To all whom it may concern:

Be it known that we, JOSHUA \V. HOUGHIN and JOSHUA R. HOUCHIN, of Brooklyn, in the county of Kings and State of New York, have invented a new and useful Improvement in Glass-Furnaces, of which the following is a specification.

Our present invention relates to ordinary glass-furnaces in which the material to be melted is deposited in a series of melting-pots placed at suitable distances apart on the floor of one common furnace.

The object of the invention is to so improve the construction of similar furnaces as to adapt them for burning petroleum or other liquid hydrocarbon, the combustion being aided and the heat intensified by an adjustable auxiliary air-blast superjacent to the hydrocarbon nozzle, as in the furnace heretofore invented by us for puddling and smelting iron.

The invention consists in the construction and combination of parts arranged as hereinafter described and claimed.

In the accompanyingtwo sheets of drawings, Figure 1 represents a longitudinal vertical section of our improved glass-meltin g furnace, the section being taken on the line as w of Fig. 2. Fig. 2 is a horizontal section of the same, taken through the line y y of Fig. 1. Fig. 3 is a vertical cross-section of the same, taken through the line 2 z of Fig. 1, and seen in direction of the arrow. Fig. 4 is a vertical cross-section of the same, taken through the line e not Fig. 1, and seen in direction of the arrow.

Like letters of reference indicate like parts in the several figures.

A designates the furnaceproper, on the floor a of which four melting-pots, B, are arranged, as shown. The roof of the furnace is elliptic in cross-section, as represented in Figs. 1 and 3, and the walls are rounded off, as shown in Fig. 2, allowing of two openings, a, for each pot to be arranged in the wall, through which the melted glass is accessible by the blowingpipe. These openings a are of course closed while the glass is being melted. The front of the furnace proper, A, is limited by a vertical wall, 0, through which atapering flue, 0, (whose bottom is above the upper level of the melting pots B, and whose top forms an extension of the inside of the furnace-roof.) extends to the mouth of the adjustable superjacent air-jet nozzle D. This is constructed as described in our previous patent application, with the exception that it has double walls, forming between them a shallow chamber, d, through which a stream of water is circulated by the pipes d, to keep the nozzle cool enough to prevent its destruction by heat.

Below the mouth of the nozzle D is the kindling-box E, near whose bottom the petroleumpipe F and its atomizing airpipeGenter. The fire-bridge H is provided with a horizontal airpassage, h, for coolingit. The kindling-boxE is accessible through a side hole, which is closed by a tightly-fitting tapering block, 0, removable by means of a suitable handle, 0.

Below the level of the furnace-floor is arranged a rectangular prismatic blast heating chamber, I,'extending from the wallOto a considerable distance beyond the outer front wall of the furnace, and terminating with a flue, J,

which leads to the chimney. The rear end of the chamber I is connected with the furnace proper, A, by a central downward flue, i, issuing through the wall 0 just above the floor a. In the chamber I is placed the blast-pipe K, arranged in several coils or return-bends, as shown, so as to expose a large heating-surface to the action of the air from the furnace. From its coiled portion the pipe K extends upward, gradually widening toward the nozzle D, in joining which it assumes the full width of the flue c, a portion of its air being first led off by the branch pipe G to atomize the liquid fuel issuin gfrom the pipe F. The air-currentcreated by a revolving fan or other blowing apparatus passes through the pipe K in direction of arrow 1, and after discharginga branch current through the pipe Gr, to vaporize the liquid fuel into the kindling-box E, issues through the nozzle D and flue c, the jet gradually widening as it enters to the full width of the furnace A. Passing the fire-bridge H it intercepts the yet smoky vapors from the kindling-box, causing their perfect combustion, and whirling them at intense heat over and around the meltingpots B to the extreme rear end of the furnace A whence they recoil, whirling around the lower parts of the pots until they reach and escape through the opening 6 to the chamber I, where they heat the pipe K and the blast, and finally escape by the flue J to the chimney. The gases, after melting the glass, thus heat the blast, and then escape by the flue J to the chimney at the same end of the furnace at which they entered it.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is

1. A glass-furnace having in connection with a liquid-fuel atomizer, G' F, and superjacent air-blast nozzle D, a narrow tapering fire-flue, c, gradually increasing in width and depth as it enters the wider furnace proper, A, the latter being provided with rounded corners, allowing of two working-openings for each melting-pot, substantially as specified.

2. In a glass-melting furnace provided with a liquid-fuel atomizer, G F, and superjacent air-blast nozzle D, the tapering blast and fire flue c,widening into the upper part of the furnace proper, A, in combination with the return-flue 2', issuing through the wall 0 at the furnace-floor, the oblong heating-chamber I, terminating into the chimney-flue J, and the coiled blast-pipe K, placed in the said chamber and leading thence up to the said nozzles, all constructed and arranged substantially as shown and set forth.

3. In a glass-melting furnace using liquidhydrocarbon fuel, the upper blast and. fire-entering flue, c, and the lower returning dischargeflue, 1', both arranged in the front wall, 0,0fthe furnaceproper, A',in combination with the heating-chamber I, the coiled blast-pipe K, the atomiziug-nozzle G F, and the supe'rjaceut airblast nozzle D, substantially as specified.

JOSHUA, W. HOUOHIN. JOSHUA. R. HOUOHIN.

Witnesses:

G. SEDGWICK, JOHN M. STELLE. 

